Editing Smart Guy (section)

====T.J. Henderson====
The lead character (played by [[Tahj Mowry]]), T.J. Henderson (whose full first and middle name were not revealed) is the youngest child in his family, portrayed as 10 to 11 years old in seasons 1 and 2, and 12 in season 3. As the show's title suggests, T.J. exhibits exceptional intelligence with an IQ of 180, knows several different languages and has a photographic memory. He skips six grades from 4th to 10th grade due to his intelligence, after his teachers at his old school discovered that T.J. was not feeling challenged enough by a 4th grade curriculum. Outside of the occasional moments of awkwardness that are bound to occur when a child interacts with high schoolers, T.J. has a peaceable existence in the school, and is eager to be involved in school functions: so much so, that he becomes the mascot for his school basketball team ("Pugnacious Pete, the Powerful Piedmont Penguin"), with mixed results.

T.J. is later promoted to being the equipment manager for the Piedmont High Penguins basketball team. He spends a fair amount of time at school with his older brother, Marcus, and his brother's best friend, Mo Tibbs. Although they have some tense moments, the two brothers, who share a bedroom throughout the series, care for each other deeply. Though T.J. spends much of his time around teenagers, he is occasionally seen spending time with children his own age, which occasionally results in his attempts to try to fit in with them in situations where he feels out of place. T.J. plays keyboard for Marcus' band Mackadocious in several episodes, after one of the group's other members breaks his finger in an accident (he also briefly served as the band's manager in the season three episode "Achy Breaky Heart").
{{anchor|Mo Tibbs}}